KR20140070824A - Cast and the manufacturing method of the same - Google Patents

Abstract

The present invention relates to a cast and a manufacturing method thereof. Such cast comprises: a core having a net form by cross weaving a plurality of line materials in a diagonal direction, and in which waterborne resins are impregnated; and a sheath material which covers the net formed core. If water is contacted with the core through the sheath material, the cast can support wound area by hardening the waterborne resins and the core. Such cast has a net form having big air vents, thereby air permeability is enhanced, taking shower is possible, and moisture removal is fast so that wound area can be maintained in a pleasant state. In addition, surgical procedure is easy and simple because the cast is in the net form. And the cast can be easily cut using scissors, not by a power saw unlike a conventional cast because the cast is in the net form; thereby the cast can be safely and easily broken up.

Description

[0001] CAST AND MANUFACTURING METHOD OF THE SAME [0002]

More particularly, the present invention relates to a casting method and a manufacturing method thereof. More particularly, the present invention relates to a casting method and a manufacturing method thereof. More particularly, the present invention relates to a casting method and a manufacturing method thereof, And a method of manufacturing the same. [0001] The present invention relates to a casting method and a manufacturing method thereof.

In general, cast refers to a bandage made by hardening gypsum or hydroentanglement polyurethane, and is a medical device that fixes the bandage by wrapping it on the wound when the bone is broken or injured.

Such casts have been made of gypsum material or hydraulically curable polyurethane to fix the fracture site. In order to prevent direct contact of the gypsum material and water-soluble polyurethane to the skin, to provide buffering effect between the material and the skin, and to protect the skin from the electric saw when removing the cast, a cotton protective skin is essential .

In addition, there is a problem that water is not allowed to come into contact with the skin protection panel, and the skin protection is poor. In addition, when worn for a long time, there is a problem that odor, skin itching, and the like are generated.

Therefore, various materials are applied as the material of the cast to solve this problem.

An example of such a cast is disclosed in Korean Patent No. 564371 (name: bandage for skin protection).

That is, as shown in Fig. 1 (a), in the above-described prior art, a non-porous film and a porous film are laminated on the upper and lower surfaces based on a polyurethane foam, and a skin protective bandage Is proposed.

The prior art has a problem in that the drying function for moisture is improved as compared with the conventional method using the starch net and the cotton band, but it takes a long time for the moisture to dry completely after the shower.

An example of such a cast is also shown in Korean Patent No. 834968 (name: skin protection pad structure for Gibbs).

That is, as shown in Fig. 1 (b), in the prior art, a cylindrical guide is formed in the longitudinal direction as the skin protection pad for the gibs.

A tangential portion is formed in contact with one longitudinal side end of the guide, and a tapered sheet portion is formed in the direction of the inside end from the tangential portion as a starting point. A skin protection pad structure molded with polyurethane is disclosed, wherein the sheet portion is formed with at least two rows of air vents in the longitudinal direction.

In this prior art, the skin protection pad itself can be ventilated, but since the casting tape must be wrapped several times on the protective pad, there is a problem that the ventilation is incomplete throughout the casting and moisture drying is difficult.

In Fig. 1 (c), a sheet-like cast is shown in Japanese Patent Laid-Open No. 2008-512170 (a name of a protection and / or a sprinter mechanism with a thermo-geometric hole made of a reformable thermoplastic resin).

The cast shown in Fig. 1 (c) is a sheet type, which is formed into a net shape by punching a sheet having a thickness of 2 to 3 mm or more in the form of rhombus or the like.

In the case of forming a net shape in this way, even when the material is stretchable when a tensile load is applied in one direction, the stretchability in that direction is limited.

In general, a thick sheet can have a stretch ratio of about 10 to 20%, but a stretchability of more than 40% is difficult. Also, due to the air vent, there is a break in the force in the mesh part, and the wrinkle is caused by the deformation in the perpendicular direction without being maintained in the plane.

Typically, when casting on the limb, the ratio of the minimum diameter to the maximum diameter is typically 1.5-2. Therefore, it is necessary to stretch 2.5 times in the radial direction in order to wear the cast comfortably.

The net-shaped cast made of sheet is not sufficiently stretched when it is worn on an arm or a leg so that it must be cut to fit the shape of an arm or a leg so that it can not be made into an integral type.

Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method for fabricating a textile material, which comprises impregnating a hydrosilicide resin or a thermoplastic resin and a skin- And which can be showered even in a worn state, and a method of manufacturing the same.

Another object of the present invention is to provide a cast which is lightweight and which can cut a part of the cast corresponding to the wound area of the skin even when the cast is worn and can further treat the wound area and its manufacturing method.

The present invention has been proposed in order to solve the above-mentioned problems. One embodiment of the present invention includes a core material having a net shape by crossing a plurality of wire rods at a diagonal angle to each other and impregnated with a hydraulically curable resin; And

And a cover material surrounding the core of the net shape,

When the water comes into contact with the core material through the sheath material, the core material is hardened by hardening of the hydro hardening resin to provide a cast capable of supporting the wound area.

According to another embodiment of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: a core material having a mesh shape by crossing a plurality of wire rods at a diagonal angle with each other, and impregnated with a thermoplastic resin having a low melting point; And

And a cover material surrounding the core of the net shape,

When dipped in hot water at 50 to 100 ° C, the heat is transferred to the core through the sheath material, the core material is softened by the softening of the low melting point thermoplastic resin, the wound area is wrapped, The core is solidified to provide a cast that can support the wound site.

According to another embodiment of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: a core material having a net shape formed by crossing a plurality of wire rods at a diagonal angle with each other and impregnated with a thermoplastic resin; And

When heat of heated water or air is transferred to the core material, the core material becomes soft due to melting of the thermoplastic resin, and when the temperature of the core material is lowered, the core material is solidified to provide a cast capable of supporting the wound.

According to another embodiment of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: depositing a lower material of a sheath material on an upper portion of a lower mold;

Impregnating the net-like core material with a hydraulically hardening resin and placing the core material on the upper portion of the lower material;

Laminating the upper material of the sheathing material on top of the core material deposited on the upper part of the lower material;

Pressing the upper and lower shell members of the outer portion of the core member by pressing the materials on the lower mold by lowering the upper mold and pressing the upper and lower shell members by heat to form the same net shape as the core member; And

And forming a net-shaped cast by cutting the heat-bonded portion in the net-forming step by a cut-off portion.

Further, another embodiment of the present invention includes a method of manufacturing a liquid crystal display device, comprising: storing a liquid phase encapsulation material solution in a reaction vessel; Impregnating a net-like core material with a thermoplastic resin, and immersing the core material in the reaction vessel; Forming an outer skin layer by coating a surface material solution on the surface of the core material; And

And drying the outer skin layer.

As described above, the cast according to the present invention and its manufacturing method have the following advantages.

First, since the cast structure has a net shape with a large ventilation hole, it is excellent in ventilation, smooth sweat discharge can be prevented, skin trouble can be prevented, skin can be washed with water, shower is possible, moisture removal is quick, It can be kept in a pleasant state.

Second, it is an integrated structure that does not need a separate skin protector because it acts as a skin protector, and the skin material is composed of a material that does not irritate the skin and does not cause skin trouble even if it is in contact with the skin for a long period of time.

Third, since the net-shaped cast can be freely deformed according to the bending of the skin, it is possible to perform a single cast as well as not need a separate cut.

Fourth, since the core of thick net shape maintains the strength enough, casting can be done with only one layer without overlapping or overlapping.

Fifth, the cast is simple and simple because of the net shape.

Sixth, since the cast is net-shaped, unlike ordinary casting, it can be easily cut with scissors without using a power saw in disassembly, so that the cast can be dismantled safely and easily.

Seventh, if there is a wound on the skin, it is possible to appropriately adjust the size of the space in the cast net according to necessity such as treatment or medication.

Eighth, the cast has a large ventilation hole, and is made of a lightweight outer cover material and core material, so it is lightweight overall, and the inconvenience of wearing can be minimized by 50% compared to the conventional one.

Ninthly, because the cast has a large vent hole, the thickness of the core material, which is a net structure, can be appropriately adjusted to maintain a sufficient structural strength to stably support the fracture site.

In the tenth, the outer shell material of the cast is a material that does not harm the skin such as polyurethane, ethylene vinyl acetate (EVA), silicone (Silicone), SEBS, NBR and the like.

1 (a) to 1 (c) are views showing a cast according to the prior art.
2 is a perspective view showing a cast according to an embodiment of the present invention.
FIG. 3 is a state view showing a state where the cast shown in FIG. 2 is worn on a foot part.
4 (a) is a perspective view showing a core material woven in a net shape shown in Fig. 2, and Fig. 4 (b) is a partial perspective view showing an inner structure in which a core material covered with a net is covered with an envelope material.
5 is a sectional view taken along the line "AA" in Fig. 4 (b).
6 is a photograph showing the core of the cast shown in Fig.
FIG. 7 is a view schematically illustrating a process of manufacturing the cast shown in FIG. 2. FIG.
Fig. 8 is a view showing a press jaw arranged in a net shape on the mold shown in Fig. 7. Fig.
FIG. 9 is a view showing knives arranged in a net shape on the bottom surface of the cut portion shown in FIG. 7;
10 is a view showing a process of forming an outer skin layer by a dipping method when a thermoplastic resin is applied.

Hereinafter, the casting 1 according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 2 to 6, the cast 1 proposed by the present invention comprises: a core material 9 having a net shape by a plurality of wire rods and made of a fabric material impregnated with a hydraulically or thermoplastic resin; And a skin material (10) that contacts the skin during surgery by wrapping the outside of the core material (9).

In the cast 1 having such a structure, the core 9 means that various types of wire, preferably cloth, are woven in a diagonal direction to form a mesh.

The fabric is woven from synthetic fibers such as polyester fibers, glass fibers, carbon fibers or natural fibers. Such fabrics also include fabric materials having quick-drying moisture absorption properties such as cross-section yarns or microfibers.

In addition, the core 9 may be selectively impregnated with a hydraulically hardening resin or a thermoplastic resin, and the impregnation may be carried out by a conventional impregnation method.

First, a case in which a water-hardenable resin is impregnated will be described. That is, when the cast 1 is immersed in water, the water-curable resin is impregnated into the fabric material by a conventional method. When the casting material 1 is immersed in water, the water comes into contact with the hydraulic resin by penetrating the fabric material, and the core material 9 is hardened .

Such a hydroscopic resin means a resin having physical properties to be cured when moisture is supplied.

As an example of such a water-hardenable resin, there is a polyurethane prepolymer composition. Such a polyurethane prepolymer composition basically comprises a polyisocyanate compound such as diphenylmethane diisocyanate and a polyol compound such as polyethylene glycol.

As the polyisocyanate compound to be used in the prepolymer composition of the present invention, any polyisocyanate which can be used for the production of polyurethane can be applied.

And, the polyol includes all polyols which can be used for the production of polyurethane.

As described above, when the cloth material is brought into contact with water in a state in which the water-curable resin is impregnated, the water-curable resin is cured.

Therefore, the cast 1 can support the wound region with a predetermined strength by hardening the hydro hardening resin.

From the viewpoint of the structure and strength of the cast 1, a plurality of first diagonal bars 3 and second diagonal bars 5 which cross each other in a diagonal direction intersect with each other, and a large number of large vent holes 7 Thereby forming a net shape.

Particularly, since the casting 1 according to the present invention has a net shape in which the vent holes 7 are formed largely, when the hydro hardening resin is cured, such a core material 9 can maintain a net shape, .

That is, a structure in which a net is formed using a fabric material as in the present invention and a case in which a net is formed by a conventional plastic sheet material are compared as follows.

In the case of a plastic sheet material having a ventilation hole, when a tensile load is applied in one direction, the material itself is deformed due to the load, and the thickness and width are deformed to become thinner, so that the bending strength is weakened.

As in the related art, a case in which a sheet having a thickness of 2 to 3 mm or more used for casting is punched in the form of a rhombus or the like to form a mesh is described.

In the case of forming a net shape in this way, even when the material is stretchable when a tensile load is applied in one direction, the stretchability in that direction is limited.

In general, a thick sheet can have a stretch ratio of about 10 to 20%, but a stretchability of more than 40% is difficult. Also, due to the air vent, there is a break in the force in the mesh part, and the wrinkle is caused by the deformation in the perpendicular direction without being maintained in the plane.

Typically, when casting on the limb, the ratio of the minimum diameter to the maximum diameter is typically 1.5-2. Therefore, it is necessary to stretch 2.5 times in the radial direction in order to wear the cast comfortably.

When a net-shaped cast made of sheet is worn on an arm or a leg, it should not be stretched sufficiently and should be cut and cut to fit the shape of an arm or a leg.

On the other hand, in the case where the fabric material is woven into the net and used as the cast 1 as in the present invention, when the tensile force acts on the cast 1, the shape of the vent hole is increased in the direction in which the tensile load is applied Deformation occurs. That is, the width of the cast 1 is increased in the pulling direction.

As a result, the net shape of the cast 1 is changed without changing the thickness or the width of the wire material (fabric material) itself forming the net, so that the cast 1 can be fitted to the curvature of the affected part.

In the case of a net made of fiber material, since the thread is tens of micrometers in thickness when the tensile load is deformed, it deforms smoothly before being hardened due to hardening of the water-hardenable resin or solidification of the thermoplastic resin.

Therefore, in the case of the core material according to the present invention, when the tensile load is applied, the maximum elongation ratio can be maintained at 250% or more without changing the thickness. Thus, it is possible to deform the net shape without changing the material according to the thickness of the arm or leg, So that the cast 1 can be formed integrally.

On the other hand, the covering material 10 surrounds the outside of the net-shaped core material 9, and directly contacts the skin when the casting 1 is performed.

More specifically, the outer cover material 10 includes a plurality of first diagonal bars 3 and a second diagonal bar 5 which intersect each other in a diagonal direction, and a plurality of vent holes 7 are formed therebetween. Thereby forming a net shape.

Such a shell material 10 means a material having elasticity, excellent elongation, waterproofness, and physical properties that do not harm the skin when worn.

Further, the sheath material 10 has an appropriate hardness, and preferably has a Shore D hardness of 50 or less.

The sheath material 10 may include various components, but may be made of a material having elasticity such as, for example, metallocene polyethylene (mPE), metallocene polypropylene (mPP), ultra low density polyethylene (ULDPE, VLDPE) Styrene block copolymers such as polyolefin, SBS (Styrene Butadiene Styrene Block Copolymer), SEBS (Styrene Ethylene Butadiene Styrene Block Copolymer), SEEPS (Styrene Ethylene Ethylene Propylene Styrene Block Copolymer) and SIS (Styrene Isoprene Styrene Block Copolymer) (EVA), a polyurethane-elastomer, a polyolefin elastomer, a polyester-elastomer block copolymer, a polyamide-based elastomer, a polyamide-based elastomer, Polyamide-elastomer block copolymer, polyether-elastomer block copolymer, polyolefin and EPDM (Ethylene Propylene Diene Monom (EPR) blend, Natural Rubber, Silicone Rubber, Styrene Butadiene Rubber, Acrylonitrile Butadiene Rubber (NBR), and the like. A material such as acrylonitrile isoprene rubber, butyl rubber, polychloroprene rubber, PVC, water-dispersible urethane, and the like. At this time, the rubber is used to include latex.

Further, in order to improve the flexibility, a plasticizer such as oil may be further added to at least one of the materials.

A plurality of fine holes h are formed in the outer covering member 10 and water can be supplied to the inside of the outer covering member 10 through the fine holes h by using a syringe or the like.

Then, the water introduced through the fine holes h comes into contact with the core material 9, and the water-hardenable resin is cured to maintain a mesh-like, regular structure.

The core member 9 and the sheath member 10 are made of the net-like cast 1 by the heat fusion method using the casting device 1.

7 to 9, the casting apparatus 1 includes a core member 9 and a lower mold 20 on which the material of the sheathing material 10 is seated; An upper mold 26 disposed on the upper portion of the lower mold 20 to press the upper and lower cover materials 10 of the outer portion of the core 9; And a cut portion 28 for cutting the heat-sealable sheath material 10 into a net shape.

In the casting apparatus 1 having such a structure, the upper mold 26 has a pressing jaw 32 protruded from its bottom surface, and the pressing jaws 32 are arranged in a net shape.

In addition, the pressing jaw 32 can generate heat at a certain temperature by providing the heating member.

Therefore, the upper metal mold 26 having such a shape presses the material of the outer cover material 10 on the lower mold 20 and can heat-bond the material of the outer cover material 10 in a net shape.

The cut portion 28 is arranged in a net shape by intersecting a plurality of knives 34.

Therefore, the cutting portion 28 is lowered to the lower mold 20, and the material corresponding to the ventilation hole 7 in the form of a net can be separated by cutting the material of the heat-

The process of manufacturing the cast 1 by the casting apparatus 1 will be described in more detail as follows.

First, in manufacturing the cast 1, a workpiece 22 to be a lower one of the outer cover materials 10 is disposed on the lower metal mold 20, and a core material 9 in the form of a net is placed on the upper surface of the work material 22 After that, the material 24 to be the upper portion of the outer covering material 10 is arranged on the upper portion.

In this state, the upper mold 26 is lowered to press the workpieces 22, 24 on the lower mold 20. At this time, a net-shaped pressing jaw 32 having the same shape as the core material 9 on the lower mold 20 is formed on the bottom surface of the upper mold 26.

In addition, heat can be generated at a constant temperature by mounting a heating member on the pressing jaw 32. [

Accordingly, the upper metal mold 26 is lowered to press the materials 22 and 24 on the lower mold 20 and heat the upper material 24 and the lower material 22, Thermally bonded. That is, the both side portions are thermally bonded with respect to the core member 9 as a reference.

Thus, the upper and lower members 24 and 22 can be thermally bonded to each other except for the space in which the core 9 is disposed.

After the upper and lower workpieces 22 and 24 are thermally bonded together in a net shape, the mesh formed knife is lowered to form the diagonal bars 3 and 5, which are net- The portion corresponding to the vent hole 7 is cut.

As a result, the upper and lower materials 22 and 24 in the heat-sealed state are separated by cutting the vent hole 7, so that only the diagonal bars 3 and 5 corresponding to the skeleton are left, thereby forming a net shape.

As described above, when the cast 1 is formed into a net shape through the thermal fusion process and the moisture is injected through the fine holes h of the shell material 10 to make contact with the core material 9 as described above, And the strength is maintained by hardening the chemical conversion resin.

Therefore, the cast 1 has a mesh-like, regularized structure due to the curing of the core material 9 impregnated with the hydroscopic resin.

In the above description, the outer cover material 10 is formed by the heat fusion method. However, the present invention is not limited thereto, and the outer cover material 10 may be formed by various methods, or may be bonded by an adhesive.

Meanwhile, when the cast (1) is applied, when it is cured by water to have a mesh structure, it can have a certain supporting strength even though a large number of air holes (7) exist.

More specifically, when a tensile load is transmitted to the cast 1 in a hardened state from one direction, the shape and size of the cross section of the core itself does not change, although the structural external appearance of the net changes.

That is, the strength of the net 1-shaped cast 1 is very important in the ratio of the width (width) to the length (thickness) of the cross section of the diagonal bars 3 and 5 in the net shape, Has a great influence on the strength of the net-like cast 1.

Considering that the cast (1) is a medical device that fixes a wound site, flexural strength is the most important factor among various strengths such as bending strength (bending strength), tensile strength, impact strength, compressive strength and torsional strength.

As can be seen from the following equation, the bending strength is proportional to the cube of thickness, so thickness is a very important factor.

I? (H / 2) ³

Assuming that the cross section of the core is a square cross section, it is proportional to the cube of the thickness as shown in the following equation.

I = bh ^3/12 (I moment of inertia, the thickness of the width b, h cross-section of the cross-section)

Also, assuming a circle, it is proportional to the square of the radius as shown in the following equation, but it is proportional to the cube of the thickness except for one dimension corresponding to the width.

^{I = πr 4/64 = πr} * r 3/64 (I moment of inertia, radius r)

As a result, as can be seen from the above equations, when the cast 1 is formed into a net shape, even when a tensile load is applied, the thickness of the end face is not reduced so that it is advantageous to maintain the bending strength, Since the bending strength increases in proportion to the cube of thickness, sufficient bending strength can be maintained even if the width of the diagonal bars (3,5) is reduced by forming a large vent hole (7).

That is, by making the net shape, the vent hole 7 is formed to be large and the width is reduced. However, if the thickness is slightly increased, the bending strength can be increased exponentially. Therefore, it is possible to maintain the bending strength while having the large vent hole 7.

On the other hand, the strength of the net-like cast 1 can also be expressed by the following proportional expression.

That is, L: D: T = 1 to 30: 0.25 to 5: 1

(L: vent hole width of core, D: width of diagonal bar, T: thickness of diagonal bar)

Assuming that the thickness T of the diagonal bars 3 and 5 is 1, the width L of the vent hole 7 formed in the cast 1 is preferably in the range of 1 to 30, , 5) is 0.25 to 5, which is appropriate.

When the ratio of the width L of the vent hole 7 to the thickness T of the diagonal bars 3 and 5 is larger than the range of 1 to 30, a plurality of vent holes 7 in the entire area of the cast 1 The diagonal bars 3 and 5 are difficult to obtain a sufficient supporting force. Therefore, when the diaphragm bar 3 and the diaphragm bar 3 are used, they are easily damaged by an external force or the vent hole 7 becomes too large.

When the ratio of the width L of the vent hole 7 to the thickness T of the diagonal bars 3 and 5 is smaller than 1 to 30, the air distribution is not smooth and the net shape deformation is insufficient It is difficult to wrap it in multiple layers or do not cut it.

Further, when the cast 1 is disassembled, the width D of the diagonal bars 3, 5 is too wide to be cut.

Therefore, it is preferable that the ratio of the width L of the vent hole 7 to the thickness T of the diagonal bars 3, 5 is within the above range.

If the width D of the diagonal bars 3 and 5 of the core member is larger than the range of 0.25 to 5, the width D of the diagonal bars 3 and 5 becomes too large to make the vent hole 7 small, (7) becomes smaller, there arises a problem that the deformation of the net structure cast (1) becomes small. In addition, the bending strength is weaker than the amount of the material used.

If the width D of the diagonal bars 3 and 5 is smaller than the range of 0.25 to 5, there is a problem that the thickness T becomes too thick in order to maintain the predetermined bending strength. When the width D is too small, (3, 5) may be twisted and structurally unstable.

On the other hand, the strength of the net-like cast 1 can also be expressed by the following dimensions.

That is, the dimensions of the ventilation space L of the core member 9, the width D of the diagonal bars 3 and 5, and the thickness T can be kept within the following ranges.

L: D: T = 5 to 100 mm: 2 to 25 mm: 2 to 25 mm

(L: vent hole width of core, D: width of diagonal bar, T: thickness of diagonal bar)

When the width L of the vent hole 7 is larger than the range of 5 to 100 mm, the ratio of the area occupied by the plurality of vent holes 7 in the entire area of the cast 1 becomes large, (3,5) is difficult to obtain sufficient supporting force.

On the other hand, when the width L of the vent hole 7 is smaller than 5 to 100 mm, the air distribution is not smooth, the net shape is not sufficiently deformed and is wrapped in multiple layers, It becomes difficult.

When the width D of the diagonal bars 3 and 5 of the core member 9 is larger than the range of 2 to 25 mm, the width D becomes too large and the vent hole 7 becomes small, There arises a problem in that the deformation of the film becomes smaller. Further, when removing the cast 1, a problem that it is difficult to cut with scissors occurs, and the bending strength is weaker than the amount of the used material.

On the other hand, when the width D of the diagonal bars 3 and 5 of the core 9 is smaller than the range of 2 to 25 mm, a sufficient thickness T is required to maintain the bending strength. In this case, Torsion of the bars (3,5) may occur and the structure becomes unstable.

When the thickness T of the diagonal bars 3 and 5 of the core member 9 is larger than the range of 2 to 25 mm, the cast 1 becomes too thick and inconvenient to wear, And it may be difficult to cut with the scissors when the cast 1 is removed.

On the other hand, when the thickness T of the diagonal bars 3 and 5 of the core member 9 is smaller than the range of 2 to 25 mm, the bending strength is not sufficient and the folded portion can not be stably supported by one fold.

In another embodiment of the present invention, the core material may be impregnated with a thermoplastic resin.

In this case, as shown in Fig. 10, a liquid phase cladding material is stored in the reaction tank R, and the core material 9 impregnated with the thermoplastic resin is immersed in the reaction tank R, An outer shell layer can be formed on the surface.

In this embodiment, the thermoplastic resin includes a resin having a low melting point thermoplastic resin blended with an aliphatic polyester resin having a melting point of 50 to 100 占 폚, polycaprolactone, a thermoplastic polyurethane containing the component, and the like.

The present invention is mainly applied to a low-melting-point resin, but can also be applied to a case where the melting point is 100 ° C or higher. In this case, polyethylene, polyacetal resin, vinyl chloride resin, polystyrene, ABS resin, .

The liquid casing material stored in the reaction tank R may be a polyolefin, a polystyrene-elastomer block copolymer, an ethylene vinyl acetate copolymer (EVA), a polyurethane-elastomer, a polyolefin-based elastomer Polyolefin elastomers, polyester-elastomer block copolymers, polyamide-elastomer block copolymers, polyether-elastomer block copolymers, polyolefins and EPDM (Ethylene Propylene Diene Monomer) , EPR (Ethylene Propylene Rubber), Natural Rubber, Silicone Rubber, Styrene Butadiene Rubber, Acrylonitrile Butadiene Rubber (NBR), Nitrile Isoprene Rubber (Acrylonitrile isoprene rubber), butyl rubber (butyl rubber), polychloroprene rubber (PVC), water dispersible urethane Of the can by dipping in a solution consisting at least of one or more materials to form the sheath.

In particular, NBR is preferred as the sheathing material, and this NBR is an emulsion polymerization polymer of butadiene and acrylonitrile at a ratio of about 2: 1.

The shell material solution as described above is stored in the reaction tank R, and the core material (C) impregnated with the thermoplastic resin is dipped in the solution.

When the core material (C) impregnated with the thermoplastic resin is immersed in the sheath material solution, a film of a certain thickness is formed on the surface of the core material (C). Therefore, the outer skin layer may be formed on the outer surface of the core material C.

In the above description, the core material impregnated with the thermoplastic resin is cast by a dipping method. However, the present invention is not limited to this, and it is also possible to use a thermal fusion method as in the case of a hydraulically curable resin.

That is, after the core material 9 having the net shape is impregnated with the thermoplastic resin, the core material 9 is disposed between the upper and lower materials 24 and 22, The cast 1 can be manufactured.

Alternatively, it is also possible to adopt a bonding method in which a core material 9 in a net shape is impregnated with a thermoplastic resin, and then the core material 9 is disposed between the upper and lower materials 24 and 22 and bonded by an adhesive.

Hereinafter, a process of applying the cast 1 of the present invention to a wound area of a patient will be described.

First, a case in which the cast 1 using the core material 9 impregnated with a hydraulically hardened resin is used will be described.

When the cast 1 is to be treated at a wound site, first, the cast 1 before it is hardened is immersed in a water tank such as a water tank. When the cast 1 is immersed in water, water flows into the inside of the outer cover material 10 through the fine holes h formed in the outer cover material 10.

At this time, although the method of immersing the cast 1 in a water tank and injecting water has been described, it is also possible to inject water by a separate water injection mechanism such as a syringe in the shell material 10 having no fine holes h .

Then, the water introduced into the inside of the shell material 10 comes into contact with the core material 9 impregnated with the hydro hardening resin. When the water comes into contact with the core material 9, the water-curable resin starts to cure.

Normally, it takes a certain time until the hydraulically curable resin of the cast 1 is completely cured, so that it is wound around the wound area while it is completely cured, that is, while the cast 1 is flexible. After the cast 1 is wound around the wound site, the sealing surface is fixed using a clip or the like.

Alternatively, the cast 1 may be worn by a method such that a cast is made into a cylindrical shape and a sock is previously worn by using a clip or the like.

Alternatively, it is also possible to fabricate a cylindrical cast 1 by weaving a net-like fabric into a cylindrical shape without using a clip or the like.

As described above, when the cast 1 in the flexed state is wound around the wound site, the cast 1 is hardened by the hardening of the hydraulically hardened resin after a certain period of time, whereby the wound site can be stably supported.

At this time, since the sheath material of the cast 1 is a material which does not harm the skin, no skin troubles are caused even when it is worn for a long period of time.

Further, since the cast 1 is in the form of a net, the ventilation is good, so that even when the cast 1 is worn, sweat can be smoothly discharged and water can be contacted.

The diagonal bars 3 and 5 can be cut by scissors, for example, battery scissors or the like, so that only one portion corresponding to the wound portion of the cast 1 is cut, May be administered or treated at the wound site.

In addition, since it is easily cut by the scissors as described above, the disassembly of the cast 1 is also simple. The existing cast (1) is removed with the electric saw when it is removed, thus causing problems such as dust problem and psychological fear.

Since the cast 1 has a sufficient bending strength as compared with the plastic sheet, the size of the vent hole 7 can be made large, and the material is small and light in weight because of the vent hole 7 having a large size.

For example, since it weighs 50% of the conventional weight, it is convenient to live while wearing it.

When the cast 1 is formed into a net-like cylindrical shape, it is also possible to insert an arm or a leg into the cylindrical cast 1 (in the case of wearing a sock) and cure by injecting water.

Conventionally, there has been a problem in that a complicated and skilled technique is required by winding a cast string or a cotton band around the cast 1 by winding it in multiple layers. However, the cast 1 manufactured according to the present invention can be easily and easily performed.

On the other hand, a case where the cast 1 impregnated with the thermoplastic resin is applied to a wound site will be described.

First, the cast 1 is immersed in a water tank. At this time, the water stored in the water tank is heated to a predetermined temperature.

For example, when the cast (1) is immersed in hot water at 50 to 100 ° C, the temperature of the cast (1) rises to a temperature higher than the melting temperature of the impregnated low melting point thermoplastic resin. By softening the low melting point thermoplastic resin, So that it can be formed in the same manner as the curvature of the wound site.

The core may also be heated by infrared heating other than hot water or hot air.

After wrapping the wound area, if the temperature of the core is lowered to room temperature, the core can be solidified to support the wound area.

At this time, after the cast 1 is wound around the wound area, the sealing surface is fixed using a clip or the like.

Alternatively, the cast 1 may be worn by a method such that a cast is made into a cylindrical shape and a sock is previously worn by using a clip or the like.

Alternatively, it is also possible to fabricate a cylindrical cast 1 by weaving a net-like fabric into a cylindrical shape without using a clip or the like.

As described above, when the cast 1 in the flexed state is wound around the wound site, the cast 1 impregnated with the thermoplastic resin solidifies and can stably support the wound site.

As described above, in the case of casting a cast 1 impregnated with a hydraulically or thermoplastic resin, the sheath material of the cast 1 is a material that does not harm the skin, so that even if it is worn for a long time, .

Further, since the cast 1 has a net shape, the ventilation is excellent, so that sweat can be smoothly discharged even when the cast 1 is worn, and a shower or the like is possible.

The diagonal bars 3 and 5 can be cut by scissors or the like because the cast 1 is in the form of a mesh so that only a part of the cast 1 can be cut and treated or treated with only the part . In addition, since it is easily cut by the scissors as described above, the disassembly of the cast 1 is also simple.

Since the cast 1 is made of the light-weight sheath material 10 and the core material 9, it is light in weight overall (50% of the conventional level) and is convenient.

On the other hand, in the case of the cast 1 in which the thermoplastic resin is impregnated into the core material 9, the case has been described in which the core material 9 is wrapped around the core material. However, the present invention is not limited thereto and the jacket material may be omitted.

That is, in the cast 1 according to the present embodiment, the core material 9 having a net shape is impregnated with the thermoplastic resin by weaving a plurality of wire materials crossing each other at a diagonal angle.

When the heated water or air heat is transferred to the core material 9, the thermoplastic resin melts and becomes a soft state. When the temperature of the core material 9 is lowered, the core material 9 is solidified, have.

Alternatively, when the cast 1 is worn, only the portion where the core 9 directly contacts the skin, or only the portion slightly wider than the contact portion, is wrapped. It is also possible to adopt a structure not to cover the base 10.

1: cast
3,5: First and second diagonal bars
7: Ventilation holes
9: core
10:
h: Fine holes

Claims (13)

Core material impregnated with a hydroscopic resin and having a net shape by crossing a plurality of wire rods at a diagonal angle to each other; And
And a cover material surrounding the core of the net shape,
Wherein the core is hardened by hardening of the hydraulically hardened resin when water contacts the core through the sheath material. A core material having a net shape by crossing a plurality of wire rods at a diagonal angle to each other and having a thermoplastic resin impregnated therein; And
And a cover material surrounding the core of the net shape,
When heat of heated water or air is transferred to the core material through the casing material, the core material becomes soft due to melting of the thermoplastic resin. When the temperature of the core material is lowered, the core material is solidified, . A core material having a net shape by crossing a plurality of wire rods at a diagonal angle to each other and having a thermoplastic resin impregnated therein; And
When the heat of heated water or air is transferred to the core material, the core material becomes soft due to melting of the thermoplastic resin, and when the temperature of the core material is lowered, the core material is solidified to support the wound area. 4. The method according to any one of claims 1 to 3,
Wherein the wire rod is a fabric material, and the fabric material includes any one of synthetic fibers, natural fibers, glass fibers, and carbon fibers. The method according to claim 1, wherein the sheathing material is selected from the group consisting of a polyolefin, a polystyrene-elastomer block copolymer, an ethylene vinyl acetate copolymer (EVA), a polyurethane-elastomer, a polyolefin elastomer, A polyester-elastomer block copolymer, a polyether-elastomer block copolymer, a polyether-elastomer block copolymer, a polyolefin and an EPDM (ethylene propylene diene monomer), an ethylene propylene (EPR) Rubber blends, Natural Rubber, Silicone Rubber, Styrene Butadiene Rubber, Acrylonitrile Butadiene Rubber (NBR), Acrylonitrile isoprene Rubber ), Butyl rubber (Butyl Rubber), polychloroprene rubber (PVC), water-dispersible urethane Cast optionally containing, or used in combination (Blending) the resin and the oil on the material. 4. The method according to claim 2 or 3,
Wherein the thermoplastic resin comprises any one of an aliphatic polyester resin having a low melting point thermoplastic resin and a melting point of 50 to 100 DEG C, polycaprolactone, and a thermoplastic polyurethane containing the component. 3. The method of claim 2, wherein the sheathing material is selected from the group consisting of polyolefin, polystyrene-elastomer block copolymer, ethylene vinyl acetate copolymer (EVA), polyurethane- A polyester-elastomer block copolymer, a polyether-elastomer block copolymer, a polyether-elastomer block copolymer, a polyolefin and an EPDM (ethylene propylene diene monomer), an ethylene propylene (EPR) Rubber blends, Natural Rubber, Silicone Rubber, Styrene Butadiene Rubber, Acrylonitrile Butadiene Rubber (NBR), Acrylonitrile isoprene Rubber ), Butyl rubber (Butyl Rubber), polychloroprene rubber (PVC), water-dispersible urethane A cast that selectively contains the above materials, or is blended with the resin. 4. The method according to any one of claims 1 to 3,
Characterized in that the ventilation space of the core material, the width of the diagonal bar, and the thickness maintain the following ratios.
L: D: T = 1 to 30: 0.25 5 to 5: 1
(L: vent hole width of core, D: width of diagonal bar, T: thickness of diagonal bar) 4. The method according to any one of claims 1 to 3,
Wherein the ventilation space of the core material, the width of the diagonal bar, and the thickness maintain the following dimensions.
L: D: T = 5 to 100 mm: 2 to 25 mm: 2 to 25 mm
(L: vent hole width of core, D: diagonal bar width of core, T: thickness of diagonal bar) Placing a lower material of the jacket material on the upper portion of the lower mold;
Placing a net-like core material impregnated with a hydraulically hardened resin on the upper portion of the lower material;
Laminating the upper material of the sheathing material on top of the core material deposited on the upper part of the lower material;
Pressing the materials on the lower mold by lowering the upper mold and compressing the materials by heat to form the same net shape as the core material; And
And forming a mesh-like cast by cutting the thermally bonded portion in the net-forming step by a cut-out portion. 11. The method of claim 10,
The hydroscopic resin includes a polyurethane prepolymer composition,
The sheathing material may be selected from the group consisting of a polyolefin, a styrene block copolymer, an ethylene vinyl acetate copolymer (EVA), a polyurethane-elastomer, a polyolefin elastomer, a polyester-elastomer block copolymer, Polyamide-elastomer block copolymer, polyether-ethylene block copolymer, EPDM (Ethylene Propylene Diene Monomer), EPR (Ethylene Propylene Rubber) blend, natural rubber, silicone rubber A silicone rubber, a silicone rubber, a styrene butadiene rubber, an acrylonitrile butadiene rubber (NBR), an acrylonitrile isoprene rubber, a butyl rubber, (Polychloroprene Rubber) water-dispersed urethane, and PVC, Wherein the oil is mixed with oil and blended. Storing the shell material solution in a reaction tank;
Immersing a net-like core material impregnated with a thermoplastic resin into the reaction vessel;
Forming an outer skin layer by coating a surface material solution on the surface of the core material; And
And drying the shell layer. 13. The method according to claim 10 or 12,
Wherein a ratio of the width of the diagonal bar to the thickness of the diagonal bar is kept at the following ratio.
L: D: T = 1 to 30: 0.25 to 5: 1
(L: vent hole width of core, D: width of diagonal bar, T: thickness of diagonal bar)

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